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CX2SA > SATDIG 12.10.09 08:02l 846 Lines 27929 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. AMSAT annual meeting (Bob McGwier)
2. Re: Can we get them to fix AO-40 first then? (Roger Kolakowski)
3. Re: PCSAT still kicking (Gordon JC Pearce)
4. accidental RF into wrong cable of Arrow=bad duplexer?
(Tim Goodrich)
5. SATPC32 config files (Tim Goodrich)
6. Anyone want to? (Randy)
7. WD9EWK in Delaware @ 2215 & 2356 UTC via AO51
(Patrick STODDARD (WD9EWK/VA7EWK))
8. Re: SATPC32 config files (Jean-Fran?ois M?nard)
9. Re: Can we get them to fix AO-40 first then? (Larry)
10. Re: Can we get them to fix AO-40 first then? (Bob- W7LRD)
11. Re: Can we get them to fix AO-40 first then? (Larry)
12. Re: Can we get them to fix AO-40 first then?
(Nigel Gunn G8IFF/W8IFF)
13. Road Trip finally comes to an end (w6zkh@xxxxxxx.xxxx
14. AO-51: Current schedule extended (Mark L. Hammond)
15. Re: Can we get them to fix AO-40 first then? (Larry)
16. Re: AO-51: Current schedule extended (Bob- W7LRD)
17. Re: accidental RF into wrong cable of Arrow=bad duplexer? (i8cvs)
18. Re: Can we get them to fix AO-40 first then? (George Henry)
19. Re: Can we get them to fix AO-40 first then?
(jari.koivurinne@xxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Sun, 11 Oct 2009 15:10:13 -0400
From: Bob McGwier <rwmcgwier@xxxxx.xxx>
Subject: [amsat-bb] AMSAT annual meeting
To: "'AMSAT-BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <4AD22D95.6040204@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Tweets, Twitpix:
http://twitpic.com/photos/rwmcgwier
Apologies for the phone camera with the smudged lens (greasy fingers,
what can I say?). MUCH better pictures were taken by Art Feller and his
shotgun (irritatingly loud) Nikon shooting rapid fire like Puff the
Magic Dragon and those will be available later. The symposium, full
audio visual, will be available on DVD later thanks to Pat Kilroy and
Dan Schultz. These offerings of mine are a quick peak at what went on.
Cheers,
Bob
N4HY
------------------------------
Message: 2
Date: Sun, 11 Oct 2009 15:11:17 -0400
From: "Roger Kolakowski" <rogerkola@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: "Michael Tondee" <mat_62@xxxxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <004b01ca4aa6$9c593900$0200a8c0@xxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Actually they are referring to the Geostationary Sats at the equator.
Roger
WA1KAT
----- Original Message -----
From: "Michael Tondee" <mat_62@xxxxxxxxxxxx.xxx>
Cc: <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 11, 2009 1:29 PM
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
> I'm sure you are joking with the AO-40 reference. No one is interested
> in helping amateurs put new sats into orbit much less fixing one of our
> broken ones. :-)
> 73,
> Michael, W4HIJ
>
> David - KG4ZLB wrote:
> > Rogue satellites to be cleared from Earth's orbit by German robots
> >
> > German-built robots are to be sent into Earth's orbit to repair 'dead
> > satellites' or push them into outer space, according to a report in
> > Sunday's Guardian newspaper.
> >
> > Robots that rescue failing satellites and push 'dead' ones into outer
> > space should be ready in four years, it has emerged. Experts described
> > the development by German scientists as a crucial step in preventing a
> > disaster in the Earth's crowded orbit.
> >
> > Last year it was reported that critical levels of debris circling the
> > Earth were threatening astronauts' lives and the future of the
> > multibillion-pound satellite communications industry. But senior figures
> > at the German Aerospace Centre (DLR) told the /Observer/ they have been
> > given the go-ahead to tackle a crisis that will come to a head in the
> > next five to 10 years as more orbiting objects run out of fuel.
> >
> > Their robots will dock with failing satellites to carry out repairs or
> > push them into "graveyard orbits", freeing vital space in geostationary
> > orbit. This is the narrow band 22,000 miles above the Earth in which
> > orbiting objects appear fixed at the same point. More than 200 dead
> > satellites litter this orbit. Within 10 years that number could increase
> > fivefold, the International Association for the Advancement of Space
> > Safety has warned.
> >
> > You can read the full article / 'Rogue satellites to be cleared from
> > Earth's orbit by German robots'/ at:
> >
http://www.guardian.co.uk/science/2009/oct/11/space-robots-clear-rogue-satel
lites
> >
> >
> > ------------------------------------------------------------------------
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG - www.avg.com
> > Version: 8.5.421 / Virus Database: 270.14.9/2428 - Release Date:
10/11/09 06:39:00
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 3
Date: Sun, 11 Oct 2009 21:30:06 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: PCSAT still kicking
To: amsat-bb@xxxxx.xxx
Message-ID: <1255293006.2450.2.camel@xxxxxxxxx.xxxxxxxxxxx>
Content-Type: text/plain
On Sat, 2009-10-10 at 08:46 -0400, Bob Bruninga wrote:
> I saw a CQ packet from PCSAT show up on my Mobile on 144.39 yesterday!
>
Does PCSAT switch between 144.39 and 145.825? I'm reasonably certain I
received a packet with W3ADO-1 a few days ago while trying (so far not
hugely successfully) to set up APRS for the ISS. Unfortunately I wasn't
able to save the dump of the packet.
Gordon MM0YEQ
------------------------------
Message: 4
Date: Sun, 11 Oct 2009 13:51:36 -0700
From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] accidental RF into wrong cable of Arrow=bad
duplexer?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <003e01ca4ab4$a1a934b0$e4fb9e10$@xxx>
Content-Type: text/plain; charset="US-ASCII"
I am an owner of a 2m/70cm LEO satellite antenna with duplexer in the
handle. Sometimes, I operate full duplex (two radios) and bypass the
duplexer by attaching my own cables to the separate parts of the antenna (1
radio for 2m, 1 radio for 70cm). In the course of rushing to catch a
satellite pass, I mixed up my connections and accidentally transmitted (5
watts) into one of the arrow antenna cables, causing RF to feed backwards
into the duplexer.
Recently, I have noticed decreased performance (poor reception, lower S/N,
even on AO-51 when in the past it was full quieting) and am trying to
ascertain if it could have anything to do with my mistake of feeding RF in
the wrong direction into the duplexer. Could my mistake cause this problem?
Thanks,
Tim
KI6VBY
------------------------------
Message: 5
Date: Sun, 11 Oct 2009 13:51:36 -0700
From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] SATPC32 config files
To: <amsat-bb@xxxxx.xxx>
Message-ID: <003901ca4ab4$9ff03a10$dfd0ae30$@xxx>
Content-Type: text/plain; charset="US-ASCII"
I hadn't used SATPC32 in a while, opting for HRD instead, but HRD is awfully
flakey at connecting to my 817 sometimes and also inexplicably reverses the
downlink and uplink frequencies for no reason sometimes. So, I decided to
give SATPC32 a try again, but I found that when I load it, it essentially
hangs my computer by taking up 99% of the resources.
I want to reinstall it, but don't want to lose the settings that I manually
configured. Can anyone tell me which files I should save before deleting the
old directory and then put into the new installation?
Thanks,
Tim KI6VBY
------------------------------
Message: 6
Date: Sun, 11 Oct 2009 16:53:15 -0400
From: "Randy" <RSwart1@xxxxx.xx.xxx>
Subject: [amsat-bb] Anyone want to?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <01c901ca4ab4$db17a8d0$0301a8c0@xxxx>
Content-Type: text/plain; charset="us-ascii"
Anyone want to try PSK on VO-52 tonite
145.890?
Randy - N2CUA
FN23
------------------------------
Message: 7
Date: Sun, 11 Oct 2009 14:09:42 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] WD9EWK in Delaware @ 2215 & 2356 UTC via AO51
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <240905.93826.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hello from Delaware!
WD9EWK will be on AO-51 for the next 2 passes from grid
FM29 in Delaware, at 2215 and 2356 UTC, today. Hope to
hear you on those passes. If you work me and want a QSL,
card please e-mail me the QSO details. If you're in the log, I
will send you a card.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 8
Date: Sun, 11 Oct 2009 18:55:11 -0400
From: Jean-Fran?ois M?nard <jf.va2ss@xxxxx.xxx>
Subject: [amsat-bb] Re: SATPC32 config files
To: Tim Goodrich <tim@xxxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<b6cfdc060910111555q52b664cdv8fd4cd848997c041@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi,
Do a backup on this directory:
C:\Documents and Settings\(your user)\Application Data\SatPC32
You will be able to retore all files back and be up and running fast !
73
2009/10/11 Tim Goodrich <tim@xxxxxxxxxxx.xxx>
> I hadn't used SATPC32 in a while, opting for HRD instead, but HRD is
> awfully
> flakey at connecting to my 817 sometimes and also inexplicably reverses the
> downlink and uplink frequencies for no reason sometimes. So, I decided to
> give SATPC32 a try again, but I found that when I load it, it essentially
> hangs my computer by taking up 99% of the resources.
>
>
>
> I want to reinstall it, but don't want to lose the settings that I manually
> configured. Can anyone tell me which files I should save before deleting
> the
> old directory and then put into the new installation?
>
>
>
> Thanks,
>
> Tim KI6VBY
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
--
Jean-Fran?ois M?nard
VA2SS
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
AMSAT www.amsat.org / Member #37102
ARRL www.arrl.org
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
------------------------------
Message: 9
Date: Sun, 11 Oct 2009 19:29:17 -0400
From: "Larry" <n1miw@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <9854BCDA7C1C499E9C7BCF80EAB0E0A8@xxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Just out of curiosity, have any of the command stations tried to open the
solar panels to give AO-40 another chance at life? I mean, if the "event"
caused some damage to the satellite with the solar panels retracted, what's
to say that opening the panels wouldn't possibly provide just enough power
to the CPU to get some telemetry flowing (if the commands could be received,
and the panels aren't damaged)? What else do we have to lose - she's been
off for how many years now without any signs of coming back? If the command
stations were to try something, might I suggest announcing a date first so
the big stations ( if any are left) can possibly assist in listening for any
type of signal?
Just a thought I've had for some time now, and thought this might be an
appropriate time / thread to finally say something. 73's ...Larry N1MIW
------------------------------
Message: 10
Date: Sun, 11 Oct 2009 23:49:34 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: n1miw@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<1303063614.2505141255304974492.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
Or maybe, just maybe we can have another AO-7? event happen to AO-40
(sobsob).? Every so often I throw a bit of RF up there, just in case.
73 Bob W7LRD
----- Original Message -----
From: "Larry" <n1miw@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Sunday, October 11, 2009 4:29:17 PM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] ? Re: Can we get them to fix AO-40 first then?
?? Just out of curiosity, have any of the command stations tried to open the
solar panels to give AO-40 another chance at life? I mean, if the "event"
caused some damage to the satellite with the solar panels retracted, what's
to say that opening the panels ?wouldn't possibly provide just enough power
to the CPU to get some telemetry flowing (if the commands could be received,
and the panels aren't damaged)? What else do we have to lose - she's been
off for how many years now without any signs of coming back? If the command
stations were to try something, might I suggest announcing a date first so
the big stations ( if any are left) can possibly assist in listening for any
type of signal?
?? Just a thought I've had for some time now, and thought this might be an
appropriate time / thread to finally say something. 73's ...Larry N1MIW
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 11
Date: Sun, 11 Oct 2009 20:07:21 -0400
From: "Larry" <n1miw@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: "'Bob- W7LRD'" <w7lrd@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <94AC9A0031884651B6BAA7CA27715258@xxxxxxxx>
Content-Type: text/plain; charset="utf-8"
I wonder if the satellite needs to be commanded "on" before any signals
are transmitted, otherwise no amount of RF will make a difference.
It would be nice to have another AO-7! I wonder how such a thing would
work with a sophisticated satellite (schedule, offpoint angle, etc.) such as
AO-40 though. My fingers are crossed that it could happen at some point in
my lifetime! I'd also like to see AO-10 come back too - we need more than
LEO'S up there. Just 1 HEO would be nice! Any universities reading this? :-)
...N1MIW
-----Original Message-----
From: Bob- W7LRD [mailto:w7lrd@xxxxxxx.xxxx
Sent: Sunday, October 11, 2009 7:50 PM
To: n1miw@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re: Can we get them to fix AO-40 first then?
Or maybe, just maybe we can have another AO-7 event happen to AO-40
(sobsob). Every so often I throw a bit of RF up there, just in case.
73 Bob W7LRD
----- Original Message -----
From: "Larry" <n1miw@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Sunday, October 11, 2009 4:29:17 PM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
Just out of curiosity, have any of the command stations tried to open the
solar panels to give AO-40 another chance at life? I mean, if the "event"
caused some damage to the satellite with the solar panels retracted, what's
to say that opening the panels wouldn't possibly provide just enough power
to the CPU to get some telemetry flowing (if the commands could be received,
and the panels aren't damaged)? What else do we have to lose - she's been
off for how many years now without any signs of coming back? If the command
stations were to try something, might I suggest announcing a date first so
the big stations ( if any are left) can possibly assist in listening for any
type of signal?
Just a thought I've had for some time now, and thought this might be an
appropriate time / thread to finally say something. 73's ...Larry N1MIW
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 12
Date: Mon, 12 Oct 2009 00:54:18 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: n1miw@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4AD27E3A.7070302@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Universities don't need long life expensive projects.
They want something cheap that this years students can do this year.
Next year there are new students and new projects.
Larry wrote:
Any universities reading this? :-) ...N1MIW
------------------------------
Message: 13
Date: Mon, 12 Oct 2009 01:19:58 +0000 (UTC)
From: w6zkh@xxxxxxx.xxx
Subject: [amsat-bb] Road Trip finally comes to an end
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<1777931937.8169411255310398595.JavaMail.root@xxxxxxx.xxxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
Have arrived at home base now, so can get back to somewhat normal
operations. I would like to thank all the ops who I worked while on this 16
day cross country adventure while operating in the following grids: DM26,
DM65, EM25, EM45, EM63, EM73, EM70, EL79, EM40, EM00 and last but not least
DM91. I have a stack of envelopes on my desk now to answer with return cards
for your efforts, and also I think I have the ones that came via eQSL.cc all
confirmed as of yesterday. I think the 2 prized Grids were EL79 and EM00.
So, please bear with me and I will get the cards out ASAP. Again, thanks to
all for giving me some challenges using the Yaesu FT60 HT and the ELK L.P.
yagi, handheld. Funny though.... in all the RV parks I was in and operating,
not one person came up to me and asked me what I was doing !! They all
looked at me funny though. Oh, acouple of highlights of the trip was first
the visual observation of the ISS on a pass over the Mississippi River which
was something, as !
alot of the RV'ers were wondering what we were looking at, until I
explained it, and then they all got a gander of it. Secondly, was finally
meeing Glenn AA5PK eyeball to eyeball. Thanks for being a host and for
letting me give a demo at the San Angelo Radio Club meeting of satellite
ops. Was nice of AO-51 to be overhead at that time.
See everyone back on normal shift now at home..
73 de John W6ZKH
DM06
------------------------------
Message: 14
Date: Sun, 11 Oct 2009 21:21:06 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] AO-51: Current schedule extended
To: amsat-bb@xxxxx.xxx
Message-ID: <4ad28478.47c2f10a.3366.044b@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi All,
Due to the AMSAT Symposium, the current "normal" AO-51 configuration is
being extended a few more days. We'll post and implement the schedule for
the rest of the month "real soon now."
Thanks for your patience--everybody was at the Symposium :)
October 5 - October 12 AMSAT Symposium week--EXTENDED
FM Repeater, V/U
Uplink: 145.920 MHz FM
Downlink: 435.300 MHz FM
9k6 BBS, L/U
Uplink: 1268.700 MHz 9k6 FM
Downlink: 435.150 MHz 9k6 FM
On behalf of the command team,
Mark L. Hammond [N8MH]
------------------------------
Message: 15
Date: Sun, 11 Oct 2009 21:49:24 -0400
From: "Larry" <n1miw@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: "'Nigel Gunn G8IFF/W8IFF'" <nigel@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <8909196168CC486AAF86663A006A1D70@xxxxxxxx>
Content-Type: text/plain; charset="utf-8"
True, but if they could develop a low-cost linear satellite, combine that
with design assistance/ideas and donations from satellite users (AMSAT,
ETC.) to offset the cost of the launch, we would be able to have a HEO
fairly quickly. That would be better than just putting a CW beacon on the
air from a LEO, right? Or would politics get in the way? Just a thought.
...N1MIW
-----Original Message-----
From: Nigel Gunn G8IFF/W8IFF [mailto:nigel@xxxxx.xxxx
Sent: Sunday, October 11, 2009 8:54 PM
To: n1miw@xxx.xxx
Cc: 'Bob- W7LRD'; amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re: Can we get them to fix AO-40 first then?
Universities don't need long life expensive projects.
They want something cheap that this years students can do this year.
Next year there are new students and new projects.
Larry wrote:
Any universities reading this? :-) ...N1MIW
------------------------------
Message: 16
Date: Mon, 12 Oct 2009 01:58:15 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51: Current schedule extended
To: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<2140378545.2536771255312695038.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
Hi Mark-? Would like to see a bit of L and or S modes in the coming weeks.?
I have some new stuff to check out.
73 Bob W7LRD
Seattle
----- Original Message -----
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Sent: Sunday, October 11, 2009 6:21:06 PM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] ?AO-51: Current schedule extended
Hi All,
Due to the AMSAT Symposium, the current "normal" AO-51 configuration is
being extended a few more days. ?We'll post and implement the schedule for
the rest of the month "real soon now." ?
Thanks for your patience--everybody was at the Symposium :)
October 5 - October 12 AMSAT Symposium week--EXTENDED
FM Repeater, V/U
Uplink: 145.920 MHz FM
Downlink: 435.300 MHz FM
9k6 BBS, L/U
Uplink: 1268.700 MHz 9k6 FM
Downlink: 435.150 MHz 9k6 FM
On behalf of the command team,
Mark L. Hammond ?[N8MH]
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 17
Date: Mon, 12 Oct 2009 04:47:03 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: accidental RF into wrong cable of Arrow=bad
duplexer?
To: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>, "AMSAT-BB"
<amsat-bb@xxxxx.xxx>
Message-ID: <006201ca4ae6$47758ca0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Tim Goodrich" <tim@xxxxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 11, 2009 10:51 PM
Subject: [amsat-bb] accidental RF into wrong cable of Arrow=bad duplexer?
> I am an owner of a 2m/70cm LEO satellite antenna with duplexer in the
> handle. Sometimes, I operate full duplex (two radios) and bypass the
> duplexer by attaching my own cables to the separate parts of the antenna
(1
> radio for 2m, 1 radio for 70cm). In the course of rushing to catch a
> satellite pass, I mixed up my connections and accidentally transmitted (5
> watts) into one of the arrow antenna cables, causing RF to feed backwards
> into the duplexer.
>
>
> Recently, I have noticed decreased performance (poor reception, lower
S/N,
> even on AO-51 when in the past it was full quieting) and am trying to
> ascertain if it could have anything to do with my mistake of feeding RF in
> the wrong direction into the duplexer. Could my mistake cause this
problem?
>
> Thanks,
>
> Tim
>
> KI6VBY
>
>
Hi Tim, KI6VBY
If I well understand you connected the VHF antenna to the UHF connector
of your duplexer and the UHF antenna to the VHF connector of your
duplexer while transmitting by mistake.
A duplexer is essentially a low-pass filter at VHF and a high-pass filter at
UHF having in the middle the common connector going to a VHF/UHF
tranceiver.
If you reverse the antennas at the output of the above duplexer the only
effect will be a very high VSWR in both bands VHF and UHF but no
damage will involve the receivers.
Best 73" de
i8CVS Domenico
------------------------------
Message: 18
Date: Sun, 11 Oct 2009 22:53:34 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: "amsat bb" <amsat-bb@xxxxx.xxx>
Message-ID: <2C1964A84C8940EC80025398ABF80192@xxxxxxx>
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I'm no expert on AO-40, but to the best of my knowledge, the solar panels
are not retractable - they are fixed in place. The satellite cannot be
commanded "on", as the shorted batteries shunt virtually all of the solar
panel output, such that either the command receiver is not operating at all,
or there is simply not enough juice to switch anything. Our best hope is
that someday, the batteries will fail open, just as AO-7's batteries did,
and AO-40 comes back to life when adequately illuminated.
George, KA3HSW
----- Original Message -----
From: "Larry" <n1miw@xxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Sunday, October 11, 2009 6:29 PM
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
> Just out of curiosity, have any of the command stations tried to open
> the
> solar panels to give AO-40 another chance at life? I mean, if the "event"
> caused some damage to the satellite with the solar panels retracted,
> what's
> to say that opening the panels wouldn't possibly provide just enough
> power
> to the CPU to get some telemetry flowing (if the commands could be
> received,
> and the panels aren't damaged)? What else do we have to lose - she's been
> off for how many years now without any signs of coming back? If the
> command
> stations were to try something, might I suggest announcing a date first so
> the big stations ( if any are left) can possibly assist in listening for
> any
> type of signal?
>
> Just a thought I've had for some time now, and thought this might be an
> appropriate time / thread to finally say something. 73's ...Larry N1MIW
>
------------------------------
Message: 19
Date: Mon, 12 Oct 2009 08:50:23 +0300 (EEST)
From: jari.koivurinne@xxxx.xxx
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: "George Henry" <ka3hsw@xxx.xxx>
Cc: amsat bb <amsat-bb@xxxxx.xxx>
Message-ID: <41997.81.16.66.9.1255326623.squirrel@xxxxxxx.xxxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
> I'm no expert on AO-40, but to the best of my knowledge, the solar panels
> are not retractable - they are fixed in place. The satellite cannot be
> commanded "on", as the shorted batteries shunt virtually all of the solar
> panel output, such that either the command receiver is not operating at
> all,
> or there is simply not enough juice to switch anything. Our best hope is
> that someday, the batteries will fail open, just as AO-7's batteries did,
> and AO-40 comes back to life when adequately illuminated.
>
> George, KA3HSW
>
Four of the solar panels are retractable but not released. Please see some
old pictures.
As the orientation of AO-40 is not known it is better that the panels are
kept around the satellite. If they still exists...
There is enough power from a single panel to run IHU and some beacon if
the bus wires and electronics are not damaged. Some sensors indicated that
sun is shining into the satellite so there may be big hole(s) in it.
Not sure about that raport though. Have to check out that.
The beacons were loud with the omnis and data was easily received with
rubber duck and hand held radio. Miss that fine telemetry sound.
I have allways said that the world would be different if AO-40 were alive.
Jari, OH3UW
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End of AMSAT-BB Digest, Vol 4, Issue 527
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